refactor: replace base::StringPrintf() calls with absl::StFormat()
The former is now a pass-through for the latter and is slated for removal
Xref: https://issues.chromium.org/issues/402415654907781
Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Charles Kerr <charles@charleskerr.com>